package com.example.demo.controller;


import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class CalcController {

    @RequestMapping("/calc")
    public String calc(Integer num1, Integer num2){
        if(num1 == null || num2 == null) return "<h1>参数错误</h1>"+
                "<a href='javascript:history.go(-1);'>返回</a>";
        return "<h1>结果：" + (num1 + num2) +"</h1>"+
                "<a href='javascript:history.go(-1);'>返回</a>";
    }

}
